J/MNRAS/335/10 Hα survey of Abell 1689 (Balogh+, 2002)
An Hα survey of the rich cluster A 1689.
Balogh M.L., Couch W.J., Smail I., Bower R.G., Glazebrook K.
<Mon. Not. R. Astron. Soc. 335, 10 (2002)>
=2002MNRAS.335...10B 2002MNRAS.335...10B
ADC_Keywords: Clusters, galaxy ; Spectroscopy ; Redshifts ; Magnitudes
Keywords: galaxies: clusters: general -
galaxies: clusters: individual: Abell 1689
Abstract:
We present results of an Hα survey in the rich cluster A 1689 at
z=0.18, using the LDSS++ spectrograph on the Anglo-Australian
Telescope (AAT). We obtained spectra covering redshifted Hα at
z=0.16-0.22, for 522 galaxies brighter than I=22.5, covering a field
of 8.7x8.7arcmin2 (∼1.1x1.1h-1Mpc at z=0.18). We securely detect
Hα emission in 46 of these galaxies; accounting for selection
effects arising from sampling and cluster membership, we determine
that 24±4 per cent of cluster members brighter than MR=-16.5+5logh
are detected with Hα flux greater than 4h-2x1038erg/s. From
a Hubble Space Telescope mosaic covering 7.5x10.0arcmin, we determine
morphologies for 199 galaxies brighter than I=21, and find that ∼20
per cent of the cluster members are of type Sa or later. More than 90
per cent of cluster spirals show Hα emission, compared with less
than 10 per cent of E and S0 galaxies.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 84 525 Abell 1689 data
--------------------------------------------------------------------------------
See also:
J/A+A/382/60 : BVR photometry in Abell 1689 (Duc+, 2002)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- [BCS2002] Sequential number
6- 7 I2 h RAh Right ascension (J2000)
9- 10 I2 min RAm Right ascension (J2000)
12- 17 F6.3 s RAs Right ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20 I1 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 29 F5.2 arcsec DEs Declination (J2000)
31- 35 F5.2 mag Imag I magnitude
37- 38 A2 --- HaClass Hα class
40- 44 F5.3 --- z ? Redshift
46- 50 F5.1 10-20W/m2 FHa ? Hα flux
52- 54 F3.1 10-20W/m2 e_FHa ? rms uncertainty on FHa
56- 60 F5.1 10-20W/m2 FNII ? [NII]6583Å flux
62- 64 F3.1 10-20W/m2 e_FNII ? rms uncertainty on FNII
66- 70 F5.3 solMass/yr SFR ? Star formation rate, in h-2M☉/yr
72- 76 F5.3 solMass/yr e_SFR ? rms uncertainty on SFR, h-2M☉/yr
78- 83 A6 --- MType Morphological type
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 11-Oct-2002